[INFO] fetching crate wedpr_s_verifiable_confidential_ledger 1.1.0...
[INFO] testing wedpr_s_verifiable_confidential_ledger-1.1.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate wedpr_s_verifiable_confidential_ledger 1.1.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate wedpr_s_verifiable_confidential_ledger 1.1.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wedpr_s_verifiable_confidential_ledger 1.1.0
[INFO] finished tweaking crates.io crate wedpr_s_verifiable_confidential_ledger 1.1.0
[INFO] tweaked toml for crates.io crate wedpr_s_verifiable_confidential_ledger 1.1.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate wedpr_s_verifiable_confidential_ledger 1.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 48e6033244e588e61ae0d448a54474e273dacaacd306374cc1b7ebdcb0229f75
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "48e6033244e588e61ae0d448a54474e273dacaacd306374cc1b7ebdcb0229f75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "48e6033244e588e61ae0d448a54474e273dacaacd306374cc1b7ebdcb0229f75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48e6033244e588e61ae0d448a54474e273dacaacd306374cc1b7ebdcb0229f75", kill_on_drop: false }`
[INFO] [stdout] 48e6033244e588e61ae0d448a54474e273dacaacd306374cc1b7ebdcb0229f75
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 61295ef04a4a4a9c3c573ca1afe5c73e24051869b3a6d57d31587bfcbe43d522
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "61295ef04a4a4a9c3c573ca1afe5c73e24051869b3a6d57d31587bfcbe43d522", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]    Compiling subtle v2.3.0
[INFO] [stderr]    Compiling openssl v0.10.31
[INFO] [stderr]    Compiling wedpr_macros v1.1.0
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling clear_on_drop v0.2.4
[INFO] [stderr]    Compiling secp256k1-sys v0.3.0
[INFO] [stderr]    Compiling openssl-sys v0.9.59
[INFO] [stderr]    Compiling addr2line v0.14.0
[INFO] [stderr]    Compiling protobuf v2.18.1
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling base64 v0.10.1
[INFO] [stderr]    Compiling hmac v0.7.1
[INFO] [stderr]    Compiling sha2 v0.8.2
[INFO] [stderr]    Compiling sha3 v0.8.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling crypto-mac v0.10.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling hmac-drbg v0.2.0
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling backtrace v0.3.55
[INFO] [stderr]    Compiling hmac v0.10.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling curve25519-dalek v1.2.4
[INFO] [stderr]    Compiling hkdf v0.10.0
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling secp256k1 v0.19.0
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling libsecp256k1 v0.3.5
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling protobuf-codegen v2.18.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.22
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling zeroize_derive v1.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling zeroize v1.2.0
[INFO] [stderr]    Compiling merlin v1.3.0
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling wedpr_utils v1.1.0
[INFO] [stderr]    Compiling thiserror v1.0.22
[INFO] [stderr]    Compiling ecies v0.1.5
[INFO] [stderr]    Compiling which v4.0.2
[INFO] [stderr]    Compiling protoc v2.18.1
[INFO] [stderr]    Compiling protoc-rust v2.18.1
[INFO] [stderr]    Compiling wedpr_protos v1.2.0
[INFO] [stderr]    Compiling bulletproofs v1.0.4
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/bulletproofs-1.0.4/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(nll)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/bulletproofs-1.0.4/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(external_doc)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/bulletproofs-1.0.4/src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(try_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bulletproofs`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "61295ef04a4a4a9c3c573ca1afe5c73e24051869b3a6d57d31587bfcbe43d522", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61295ef04a4a4a9c3c573ca1afe5c73e24051869b3a6d57d31587bfcbe43d522", kill_on_drop: false }`
[INFO] [stdout] 61295ef04a4a4a9c3c573ca1afe5c73e24051869b3a6d57d31587bfcbe43d522